How many miles is too high for LT1?
Registered User
Joined: Apr 2003
Posts: 1,188
From: Western New York
depends on how well it was maintained as well as how it was driven. these engines can last a long long time. Check the basic things you would check for when looking over a car. Check to see what parts have been replaced. Specifically the optispark, fuel pump, water pump. these are a few things that if failed could cause a sudden weight loss in the wallet.
Registered User
Joined: Oct 2002
Posts: 319
From: Enid, Oklahoma
my 1994 z28 has 167k miles on the engine only big problem i have is i blew my exhaust manifold gaskets so i just ordered a set of headers.
she leaks a bit of oil but canot complain.
one thing to look at is transmission
she leaks a bit of oil but canot complain.
one thing to look at is transmission
Last edited by 1994CamaroZ28; Jun 5, 2004 at 03:43 PM.
Registered User
Joined: Jun 2003
Posts: 3,620
From: Saginaw, Michigan
Things that I would ask about:
Intake manifold gaksket
Optispark
Waterpump
fuel pump
Those are the most common things that fail, like others have said.
I have 62000 on my LT1 and have replaced my waterpump, fuel pump (under warrenty), and my intake manifold gasket (under warrenty)
Feel behind the engine, where the intake manifold meets the block. If there is oil back there, it most likely has an intake manifold leak.
Drive the car and listen for anything that sounds abnormal. The LT1 is a fairly smooth running engine. It should have a very very mild shake at idle, almost unnoticable.
117k is not a ton of miles for the LT1, but it's still quite a few on any car. If you plan to mod it, it makes less of a difference because you end up changing so many engine parts anyways.
Dan
Intake manifold gaksket
Optispark
Waterpump
fuel pump
Those are the most common things that fail, like others have said.
I have 62000 on my LT1 and have replaced my waterpump, fuel pump (under warrenty), and my intake manifold gasket (under warrenty)
Feel behind the engine, where the intake manifold meets the block. If there is oil back there, it most likely has an intake manifold leak.
Drive the car and listen for anything that sounds abnormal. The LT1 is a fairly smooth running engine. It should have a very very mild shake at idle, almost unnoticable.
117k is not a ton of miles for the LT1, but it's still quite a few on any car. If you plan to mod it, it makes less of a difference because you end up changing so many engine parts anyways.
Dan
Registered User
Joined: Jun 2002
Posts: 40
From: Rosslyn, VA (originally fm Heber, CA)
over 200K
I'm currently on 258,000 miles with only the water and fuel pumps in need of replacement - and that was a few miles ago. Treat her like a lady and she will always perform...
Registered User
Joined: Sep 2001
Posts: 720
From: Indianapolis
I have 106k on my 96 Z, well taken care of, NONE of the seals leak or seep a thing and it burns no oil, with the open air box and a light optioned car I can hang with LS1's I can't win but I can hang with them. Most of them have half the miles I do also.
Thread
Thread Starter
Forum
Replies
Last Post
F'n1996Z28SS
Cars For Sale
8
Aug 23, 2023 11:19 PM
dbusch22
Forced Induction
6
Oct 31, 2016 11:09 AM